12404390 has 32 divisors (see below), whose sum is σ = 23864544. Its totient is φ = 4625920.

The previous prime is 12404389. The next prime is 12404401. The reversal of 12404390 is 9340421.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21992 + ... + 22548.

It is an arithmetic number, because the mean of its divisors is an integer number (745767).

Almost surely, 2^12404390 is an apocalyptic number.

12404390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12404390 is a deficient number, since it is larger than the sum of its proper divisors (11460154).

12404390 is a wasteful number, since it uses less digits than its factorization.

12404390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 712.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 12404390 is about 3521.9866552842. The cubic root of 12404390 is about 231.4862168694.

The spelling of 12404390 in words is "twelve million, four hundred four thousand, three hundred ninety".